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Role of Mn Addition in Tuning the Microstructure and Mechanical Properties of Mg-Al-Ca Dilute Alloy.
- Source :
- Journal of Materials Engineering & Performance; Jun2023, Vol. 32 Issue 11, p5109-5115, 7p
- Publication Year :
- 2023
-
Abstract
- In this work, the role of manganese (Mn) addition in tuning microstructure and mechanical properties of the Mg-1.0Al-0.4Ca-xMn (x = 0.6, 1.0, 1.34 wt.%) alloys are studied. When enhancing the Mn content from 0.6 to 1.0 wt.%, the nano-precipitates of Al<subscript>2</subscript>Ca/Al<subscript>8</subscript>Mn<subscript>5</subscript> phase becomes much finer, which can effectively refine the dynamical recrystallized (DRXed) grain size and also the subgrain lamellae. However, further increasing Mn content to 1.34 wt.%, the amounts of nano-Al<subscript>2</subscript>Ca and Al<subscript>8</subscript>Mn<subscript>5</subscript> phases in the grain interiors are obviously decreased since more Al atoms are attracted to form the micron-sized Al<subscript>8</subscript>Mn<subscript>5</subscript> phases, and average DRXed grain size in AXM102 alloy is thus largely increased. As a result, the as-extruded Mg alloy can exhibit the optimal mechanical property with yield strength (YS) of ~ 379 MPa and elongation of ~ 7.6%, only when the added Mn atom is controlled at ~ 1.0 wt.%. The relevant results can shed light on the further designing of novel high-strength and low-alloyed Mg wrought alloys. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10599495
- Volume :
- 32
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Materials Engineering & Performance
- Publication Type :
- Academic Journal
- Accession number :
- 163943207
- Full Text :
- https://doi.org/10.1007/s11665-022-07456-2